Inventory and assessment of significant scientific Algerian geoheritage: Case of remarkable geosites from Orania (Western Algeria)

Abstract

Orania, located in northwestern Algeria, is characterized by a diversified and fascinate geology. Ten geosites, namely Nedroma granite, Souk el Khemis Messinian Reef, Tadmaya Plateau Basalt Columns, Sassel Beach Messinian Stromatolites, Tafraoui Canyon, Ouillis Quarry, Cedar Forest Numidian Flysch, Ain Ouarka Diapir, Ain Ouarka mid-Jurassic Reefs and Tiout Sandstones Rock Art, have been selected based to their scientific and additional values. These geosites have a relatively high scientific, geoeducational and pedagogical values, due to their uniqueness, rarity, representativeness of geological elements, exceptionality, scientific knowledge and geodiversity. Regarding geotouristic values, they have high aesthetic and moderate cultural values. This inventory shows the scientific importance of the area, which may be frequented by both native and foreign visitors, including undergraduate and graduate geology students. Some geosites are affected by a degradation risk and they are damaged by human activities. The main threat of this anthropogenic pressure is from vandalism, lack of care by local community and visitors, mineral extraction, urbanization and conflagrations. Finally, Management procedures, establishment of geoparks and organization of conferences and meetings must be planned and implemented in order to increase the sustainable use and geoconservation of the analyzed sites, which have all the potential to be recognized as a geoheritage sites and deserve to be declared as a National Geological Monuments.